A systems administrator created a new Docker image called test. After building the image, the administrator forgot to version the release. Which of the following will allow the administrator to assign the v1 version to the image?
To assign a version to a Docker image that has already been built and tagged, the systems administrator should use the docker image tag command. Therefore, the correct option is C, docker image tag test test:v1.
The docker image tag command is used to assign a new tag (including a version number) to an existing Docker image.
Answer is C
$ docker image tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]
https://docs.docker.com/engine/reference/commandline/image_tag/
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